A Study on Decreasing Metals from Hanwoo Slurry with Chemical Additives

한우액상분뇨로부터 중금속 저감을 위한 화학제재의 이용에 관한 연구

  • Kim, Chang-Mann (Ginseng & Organic Co., Ltd, Industry Academy Cooperation, Joongbu University) ;
  • Choi, Jung-Hoon (Department of Chemistry, Hanyang University) ;
  • Ko, Soo-Hyun (Department of Civil Engineering, Kyungpook National University) ;
  • Choi, In-Hag (Ginseng & Organic Co., Ltd, Industry Academy Cooperation, Joongbu University)
  • 김창만 (진생유기농(주) 중부대학교) ;
  • 최정훈 (한양대학교 화학과) ;
  • 고수현 (경북대학교 토목공학과) ;
  • 최인학 (진생유기농(주) 중부대학교)
  • Received : 2010.08.26
  • Accepted : 2010.10.25
  • Published : 2010.11.30


Repeated additions of untreated slurry to soil affected ecology and caused high levels of heavy metal in soil and ground water. The objective of this study was to evaluate heavy metal from hanwoo slurry with ferrous sulfate ($FeSO_4{\cdot}7H_2O$), aluminum sulfate [$Al_2(SO_4)_3{\cdot}14H_2O$, alum] and aluminum chloride ($AlCl_3{\cdot}6H_2O$) as a way to improve environmental management in hanwoo industry. The treatment rates, which were incorporated totally within the hanwoo slurry, were 1.0 g and 1.5 g of ferrous sulfate, alum and aluminum chloride/25 g of hanwoo slurry. The various rates of chemical additives significantly increased dry matter (9.98~13.94%) and decreased pH (3.48~6.52) compared with the controls. The use of chemical additives decreased Fe (11~29%), Al (7~12%), Zn (13~36%), and Cu (4~32%) contents, except for Fe in hanwoo slurry with ferrous sulfate and Al in hanwoo slurry with alum and aluminum chloride. In addition, the reduction in heavy metal should be associated with reduction in pH. In conclusion, the results of this study suggest that alum and aluminum chloride additives at rate of 1.5 g were cost-effective management practice that significantly reduces heavy metal from hanwoo slurry, while it may be improved environmental management.


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